Finding the Fourth Proportional to 2,387.47, 3,568.60 and 2,152.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,387.47 : 3,568.60 = 2,152.77 : x
2. Step 2: Convert to fraction form
   2,387.47/3,568.60 = 2,152.77/x
3. Step 3: Cross multiply
   2,387.47x = 3,568.60 × 2,152.77
4. Step 4: Simplify right side
   2,387.47x = 7,682,364.26
5. Step 5: Solve for x
   x = 7,682,364.26/2,387.47
6. Step 6: Final answer
   x = 3,217.78